 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A fokker 100 was released for service with the right aileron tab lockout actuator hydraulic pressure and return lines swapped.
| Attributes | |
| ACN | 489260 |
| Time | |
| Date | 200009 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 489260 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On sep/xa/00, aircraft xyz was reported to have stiff ailerons by the flight crew on taxi. Aircraft returned to the gate, and it was found that the pressure and return lines were hooked up backwards at the aileron tab lockout actuator. This error was caught prior to the first flight out of its ZZZ modification visit. It was brought to my attention on oct/xc/00 at XA00 that I was involved in the leak check of the actuator after the hydraulic line modification was completed. During the leak check, I failed to actuate the aileron when the hydraulic pressure was on. I realize now that didn't provide a proper leak check and that the cockpit man may have been able to notice the stiff ailerons at that time.
Original NASA ASRS Text
Title: A FOKKER 100 WAS RELEASED FOR SVC WITH THE R AILERON TAB LOCKOUT ACTUATOR HYD PRESSURE AND RETURN LINES SWAPPED.
Narrative: ON SEP/XA/00, ACFT XYZ WAS RPTED TO HAVE STIFF AILERONS BY THE FLC ON TAXI. ACFT RETURNED TO THE GATE, AND IT WAS FOUND THAT THE PRESSURE AND RETURN LINES WERE HOOKED UP BACKWARDS AT THE AILERON TAB LOCKOUT ACTUATOR. THIS ERROR WAS CAUGHT PRIOR TO THE FIRST FLT OUT OF ITS ZZZ MODIFICATION VISIT. IT WAS BROUGHT TO MY ATTN ON OCT/XC/00 AT XA00 THAT I WAS INVOLVED IN THE LEAK CHK OF THE ACTUATOR AFTER THE HYD LINE MODIFICATION WAS COMPLETED. DURING THE LEAK CHK, I FAILED TO ACTUATE THE AILERON WHEN THE HYD PRESSURE WAS ON. I REALIZE NOW THAT DIDN'T PROVIDE A PROPER LEAK CHK AND THAT THE COCKPIT MAN MAY HAVE BEEN ABLE TO NOTICE THE STIFF AILERONS AT THAT TIME.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.